Climate Change 2013: The Physical Science Basis

“Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over dcades to millennia.” The full IPCC Working Group 1 report on Climate Change 2013: The Physical Science Basis is now available athttp://ipcc.ch/report/ar5/wg1/#.Uup8syhJtrV